Advanced Bio Chapter 21 (pg. 455-463)

Reptiles dominated the

C. Mesozoic era

The Cenozoic is often called the age of the

E. All of these

The earliest birds

E. All of these

During the Oligocene epoch, specialization in mammals that are suggestive of a more open type of habitat included

E. All responses answer the question

Dragonflies ranged in size from those smaller than today's dragonflies, to some with wingspans of 75 cm appeared during the

E. Carboniferous period

During the Pleistocene epoch, plant communities changes drastically in response to

E. Fluctuating climates (ice ages)

The Mesozoic era is often called the Age of

E. Reptiles

Amphibians evolved directly from what ancestral organisms?

C. Fishes

Shallow seas covered much of the land during the

C. Ordovician period

The greatest mass extinction of all time, which occurred at the end of the Permian period:

C. Resulted in the extinction of more than 90% of all existing marine species

The mass extinction at the end of the Cretaceous period

C. Was likely the result of dramatic climate changes

The first land animals were probably the

A. Arthropods

The time in history of the Earth when evolution was progressing at the most rapid rate, as evidenced by fossils such as those of the Burgess Shale, is the

A. Cambrian period

Mammal like reptiles arose during the

A. Carboniferous period

Vascular plants and air breathing animals first appeared during the

A. Silurian period

The first fish

A. We're small and jawless but had bony armor

The ornithischian dinosaura

B bad pelvic bones similar to birds

The animal in figure 21-2 represents

B. An ichthyosaur

Which of the following statements about dinosaurs is false?

B. Dinosaurs were all slow-moving, with relatively low metabolic rates

One source of fossil organisms in Precambrian rock formations is

B. Ediacarian fossils

Among the following, which js the longest unit of geological time?

B. Era

Not much physical evidence of life is available from rocks of the Precambrian because these ancient rocks

B. Have been deeply buried in most areas

During the _____ epoch, the mammals experienced an explosive adaptive radiation

B. Paleocene

Great swamp forests covered the globe and formed the major coal deposits during the

C. Carboniferous period

The Age of Fishes is an informal name for the

C. Devonian period

Precambrian rocks contain fossils of

D. Cells and simple organisms

Which of the following characteristics applies to the organism in figure 21-2

E. All of the listed characteristics apply to this organism

Amphibians

E. All of these